There are
2,105 mi
from Tacoma, WA to Cahokia, IL
That's the driving distance. It would take 1 day 12 hours to go from Tacoma, Washington to Cahokia, Illinois.
The flight distance (direct flight from Tacoma, WA to Cahokia, IL) is 1,724.10 mi.
2,105 mi = 3.22 kms